/Engine/Source/Runtime/AnimGraphRuntime/Public/BoneControllers/AnimNode_LookAt.h
Various ways to interpolate TAlphaBlend.
namespace EInterpolationBlend { enum Type { Linear, Cubic, Sinusoidal, EaseInOutExponent2, EaseInOutExponent3, EaseInOutExponent4, EaseInOutExponent5, MAX, } }